Hi community, Carbondata currently support two types of compaction: Minor and Major compaction. CarbonData will do major compaction according to the user defined segment size. But which segments to be merged are transparent to users. We plan to extend major compaction to support user specified segments, this will be useful in cases below: 1) we can precisely control which part of table to be merged when table is very large. 2) each table can has its own compaction strategy which controlled by user app.
the proposed syntax: ALTER TABLE [db_name].table_name COMPACT [SEGMENT seg_id1,seg_id2] 'MAJOR' in which [SEGMENT seg_id1,seg_id2] is optional and compatible with original syntax. -- Sent from: http://apache-carbondata-dev-mailing-list-archive.1130556.n5.nabble.com/
